The real name for a hashtag is an octothorpe. The 'octo' refers to the eight points in the symbol, but according to the Merriam-Webster dictionary the 'thorpe' part is a mystery.

Since its inception in 1886, the World Chess Championship has seen only one title decided by a checkmate - nearly a century ago, in 1929.

Tipping was abolished in Switzerland in 1974 following a tax dispute over tips. Service charges are now included in prices, and higher wages have replaced tipping.

A recent study found that medication absorbs fastest when lying on your right side, as it helps the stomach work better. Researchers had previously assumed standing would be most effective.

The oldest barrel of drinkable wine, dating back to 1472, has been tasted only three times: in 1576 for an alliance, in 1716 after a fire, and in 1944 to celebrate Strasbourg's liberation in World War II.

The term 'shrapnel' comes from Lieutenant-General Henry Shrapnel, a British officer who, in 1784, invented a shell that exploded mid-air, scattering metal fragments now named after him.

Movie trailers were originally shown after the main film - not before - which is why they're called 'trailers.' This changed in the early 20th century when theaters moved them to ensure audiences watched them.